Home / 830,445.30-1,244,683.80-430,880.40

Finding the Fourth Proportional to 830,445.30, 1,244,683.80 and 430,880.40

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Solution

The fourth proportional to 830,445.30, 1,244,683.80 and 430,880.40 is: 645,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,445.30 : 1,244,683.80 = 430,880.40 : x
  2. Step 2: Convert to fraction form
    830,445.30/1,244,683.80 = 430,880.40/x
  3. Step 3: Cross multiply
    830,445.30x = 1,244,683.80 × 430,880.40
  4. Step 4: Simplify right side
    830,445.30x = 536,309,853,617.52
  5. Step 5: Solve for x
    x = 536,309,853,617.52/830,445.30
  6. Step 6: Final answer
    x = 645,809.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.